Pakistan's largest human trafficking problem, according to the report, is that of bonded labour. Concentrated in Sindh and Punjab provinces, it is particularly common in brick kilns, carpet-making, agriculture, fishing, mining, leather tanning, and production of glass bangles. Estimates of victims of bonded labour vary widely, but together with those in forced marriages and women who are traded between tribal groups to settle disputes or as payment, are likely to exceed one million, it said.

Apart from paying debts, parents also sell, or attempt to sell, children for other reasons.